Misleading error message with missing `servicex.yaml`

[alexander-held]

In the absence of a servicex.yaml file defining endpoints, I see the following error message:

ServiceXException: (ServiceXException(...), 'Unable to find name/type uproot in api_endpoints in servicex.yaml configuration file. Saw only names (default) and types (xaod)')

This sounds as if a servicex.yaml file was found, but that my desired endpoint was not included in there. Instead, it would be useful if the error message mentioned that no file was found.

[ponyisi]

Fixed in 3.0 client